APPLICATION OF LaSr2Fe2CrO9-DELTA IN SOLID OXIDE FUEL CELL ANODES

The oxide composition LaSr2Fe2CrO9-delta was tested for application as an anode material for solid oxide fuel cells. Despite the high Fe content, this composition was stable under SOFC anode conditions up to about 800 C. The composite anode LaSr2Fe2CrO9-delta-Gd0.1Ce0.9O2-delta was tested in Gd0.1Ce0.9O2-delta and La0.9Sr0.1Ga0.8Mg0.2O3-delta electrolyte-supported cells in air and humidified H2. The maximum power density was about 365 mW/cm2 at 800 C, with a corresponding total cell resistance of about 0.69 ohm.cm2. However, the anode polarisation resistance at 800 C was about 0.25 ohm.cm2.